Using aol on an iMac with el capitan: What happened to the options for setting up your accounts through Mail?!

I need help with the new setup for imap accounts in Mail. There used to be options in the accounts panel that control things like if and when things are deleted from the server. Where did they go? They looked like this before, which Rkaufmann87 kindly posted:

The above is what I used to see when I accessed Accounts from within Mail, and it's what I'm hoping to find under this new system. Now clicking Accounts in Mail opens Internet Accounts within the System Preferences pane and I see the image below. (Where I pasted the white block that says "name/email address," my own name and address actually display.)

When you click Details next to the selected account in the above, you get a dialog that gives the kind of email account — in this case, AOL — your email address, your name, and your password, with no other options. Here's a shot of that.

Are the configuration options somewhere else now? I am lost on this. In the course of exploring, Mail stopped working. I had to delete and reload the account. And in the process, I lost draft emails. Thanks in advance.